pcsx2: patch git tag instead of git rev

Signed-off-by: Marcin Serwin <marcin@serwin.dev>

pkgs/by-name/pc/pcsx2/0000-define-rev.patch

@@ -1,12 +0,0 @@
-diff --git a/cmake/Pcsx2Utils.cmake b/cmake/Pcsx2Utils.cmake
-index 87f012c..052f1be 100644
---- a/cmake/Pcsx2Utils.cmake
-+++ b/cmake/Pcsx2Utils.cmake
-@@ -44,7 +44,6 @@ function(detect_compiler)
- endfunction()
- 
- function(get_git_version_info)
--	set(PCSX2_GIT_REV "")
- 	set(PCSX2_GIT_TAG "")
- 	set(PCSX2_GIT_HASH "")
- 	if (GIT_FOUND AND EXISTS ${PROJECT_SOURCE_DIR}/.git)

pkgs/by-name/pc/pcsx2/package.nix

@@ -59,17 +59,18 @@ llvmPackages.stdenv.mkDerivation (finalAttrs: {
   };
 
   patches = [
-    # Remove PCSX2_GIT_REV
-    ./0000-define-rev.patch
-
     ./remove-cubeb-vendor.patch
   ];
 
+  postPatch = ''
+    substituteInPlace cmake/Pcsx2Utils.cmake \
+      --replace-fail 'set(PCSX2_GIT_TAG "")' 'set(PCSX2_GIT_TAG "${finalAttrs.src.tag}")'
+  '';
+
   cmakeFlags = [
     (lib.cmakeBool "PACKAGE_MODE" true)
     (lib.cmakeBool "DISABLE_ADVANCE_SIMD" true)
     (lib.cmakeBool "USE_LINKED_FFMPEG" true)
-    (lib.cmakeFeature "PCSX2_GIT_REV" finalAttrs.src.tag)
   ];
 
   nativeBuildInputs = [